Eisco Labs | SKU CH0310W

Bark Cork Stopper, Size 20

Pack of 10 ASTM-compliant natural bark cork stoppers in Size 20 provides sealing for laboratory vessels and chemistry apparatus.

$79.99

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Product Description

These bark cork stoppers are supplied in a pack of 10 and are ASTM Size No. 20. Each stopper has a bottom diameter of 34 mm, a top diameter of 41 mm, and a length of 38 mm. Cork stoppers provide a traditional, effective seal for flasks, bottles, and test tubes in laboratory settings. The natural bark material is compressible and conforms to glass surfaces to create a secure fit.

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Ships from Rochester, NY. Orders received by 1:00 PM EST M-F typically ship same business day. Free US shipping on orders over $100. Expedited options available.

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30-day return window. Unused items receive a full refund; used items are eligible for store credit or exchange. Return shipping is paid by the customer. Clearance items are final sale. Defective products? Contact us directly.

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